Door for glass-pot furnaces



C. H. CHRISTIE DOOR FOR GLASS POT FURNAGES Filed April l5 FIG. 2

Uct. 2l

Io i IG. 5

i Patented'ct; 2, i923.

l Yes @awr ein noon non' GLASS-rom rutinarias.'

Application led April 15, 1922.l Serial No. 552,827.

useful lmproveinentin Doors for Glass-Pot Furnaces; and 'l do hereby declare the following to be a full, clear, and exact descrip* Y tion thereof.V n My invention relates to doors for .glass pot furnaces or other furnaces to which it may be found applicable. Y Thevobject of my inventio-n is to provide Y a door formed of refractory material of durable .construction in which the irons forming the frame for the raising and lowering ofthe door are protected from Vthe heat, thereby duly preventing the burning out of Y the irons and greatly increasing the Vlife of the door. Y f ln the accompanying drawing, Fig. 1 is a front view of a door embodyingmy invention; Fig. 2 is a topview; Fig. 3 is an end view; and Fig. 4 is a section on the line 4 4, Fig. l.; Fig. 5 is a section on the line 5 5, Fig. l. Y

Inthe drawing the numeral 2 designates the door which is made up of refractory material capable of withstanding the Yintense heat to which such doors are subjected, more especially in the case of glass pot furnaces where the pots are arranged the furnace and charged with batch by a ladle introduced through the charging opening 3 formed in said door.

To provide for the raising and lowering Y Vof the door, an iron framework is necessary,

and by my invention this frame-work consists of the lower rod 4 which is embedded Vin the 'door and whichV extends from one end of the dooryto the other; This rod 4 is exposed at the recesses 5 formed in the door, and the upright rods 6 are secured to the rod 4, said upright rods having the inwardly extending ends with the eyeV 7 formed to encircle the rod 4.

The upright rods 6 extend up on the outside of the door, and at their upper ends pass through the staples `8 which are held in place by the upper cross bar 9 which extends through said staples and is embedded in the door. rlhe upper ends of the upright 'rods Gl have the hooks l0 formed thereon with which the lifting chainsrll are connally extending metal rods embedded in said nectedV which pass up over suitable sheaves which arel operated by/,any suitable powerV for raising and` lowering thedoor.

rlhe front of the door is formed with the recess 12 which is above the vlarge opening 3, and'at this recess a pipe 13 surrounds the rod 9 to protect it at that point from burning or warping.

The lower portion of they door bulges out, as at 14, below the charging opening 3 to form the shelf 15.

By myinventionllprovide for. the protecting of the irons of the fraine to which connection is made for the lifting of the door, and thesevere action of the heat on said frame is practically eliminated sothat the life of the frain'e is greatly increased aswell as the life of the door.

lll/hat I claim is:

1. A furnace door comprising a body portion made up of refractory. material, lonegitudinally extending metal rods embedded in said refractory material, said rods being exposed for a portion of theirflength near the ends thereof, and upright rods on theV outside of said door engagii'ig said rods at the exposed portions, Vand connecting means at the upper ends of said rods for attaching lifting chains.

2. A furnacev door comprising a-bodyporfl tion formed of refractory material, lonrgitudinally extending metal rods embedded Y in said material adjacent the top and bottoniA of said door, said rods being yexposedfor a portion of their length near the ends there` ofupright rods having eyes at the vlower ends engaging said longitudinally extending rods at their exposed portions, staples engaging the upper longitudinally extending rods at their exposed portions, and the upper ends of said upright rods passing through said staples, and hooked portions on the l upper ends of said upright rods.

3. A furnace` door comprising a body portion Vvof refractory material and longitudii'naterial adjacent the top and bottoinfthere# of, said door having a charging opening and a recess formed. aboversaid charging open-v ing, across which the upper of said rods extends'and a protecting coveringfor saidr rod where exposed at said recess,-said rods1 beingV exposed at, or near, their ends, and upright rods engaging said longitudinally extending-.rods at their exposedportions. i

4. A furnace doorl comprising a body por- Y ,ico

iro.

Y materiel adjacent` the top and bottomtheretion of refractory' material and longitudinelly extending Inete rods embedded in said extends, and e' pipe surrounding said rod Where exposed at said reoessj/eai'd rods lbeing l 'exposed atfor neer,Y thier ende, and upright rods engaging Said longitudinally extending l0 j rods at their exposed portions. Y f

nHARLE'SVVV n `testimony whereof I; the said have hereunto set my hand.

H. CHRISTIE,

CHARLES H. CHRISTIEt 

